Vehicle brake system with an electronically controllable brake booster

Abstract

A vehicle brake system with an electronically controllable brake booster, comprising an actuation member (70, 80) transferring the actuation travel of a brake pedal to a master cylinder, which is allocated a travel limiting element (82) accepted between two abutment faces which limits the actuation travel of the actuation member (70), and a switching element (85) which upon an actuation movement of the actuation member (70) can be activated by one of the abutments (91, 91a) in order to issue a signal to the controller of the brake booster, with the travel limiting element being arranged on the actuation member (80) between two collars (83, 84), and a carrier (86) accepting the switching element (85) being arranged between the travel limiting element and one of the collars.

We claim: 
     
       1. A vehicle brake system with an electronically controllable brake booster, comprising an actuation member (70, 80) transferring the actuation travel of a brake pedal to a master cylinder,   which is allocated a travel limiting element (82) accepted between two abutments (91, 92) which limits the actuation travel of the actuation member (70), and   a switching element (85) which upon an actuation movement of the actuation member (70, 80) can be activated by an abutment (91a) in order to issue a signal to a controller of the brake booster, with   the travel limiting element (82) being arranged on the actuation member (70, 80) between two collars (83, 84), and   a carrier (86) accepting the switching element (85) being arranged between the travel limiting element (82) and one of the two collars (83, 84).   
     
     
       2. A vehicle brake system with an electronically controlled brake booster (40) with an additional air control which can be activated depending on the actuation dynamics of a brake pedal, and which comprises an actuation member (70, 80) for transmitting the actuation movement of the brake pedal to a master cylinder, which is allocated a travel limiting element (82) accepted between two abutments (91, 92) which limits the actuation movement of the actuation member (70), and   a switching element (85) which can be activated by an abutment (91a) upon an actuation movement of the actuation member (70, 80) in order to issue a signal to a controller of the brake booster, whereby   the travel limiting element (82) is arranged clearance-free in the direction of actuation at the actuation member (70, 80), and   a carrier (86) accepting the switching element (85) is connected with the travel limiting element (82).   
     
     
       3. The vehicle brake system according to claim 2, characterized in that the travel limiting element (82) is arranged between two collars (83, 84) at the actuation element (70, 80), and the carrier (86) is arranged between the travel limiting element (82) and one of the two collars (83, 84).   
     
     
       4. A vehicle brake system with an electronically controllable brake booster, comprising an actuation member (70, 80) transferring the actuation travel of a brake pedal to a master cylinder,   which is allocated a travel limiting element (82) accepted between two abutments (91, 92) which limits the actuation travel of the actuation member (70), and   a switching element (85) which upon an actuation movement of the actuation member (70, 80) can be activated by an abutment (91a) in order to issue a signal to a controller of the brake booster, with   the travel limiting element (82) being arranged on the actuation member (70, 80), and   a carrier (86) accepting the switching element (85) being arranged at the travel limiting element (82).   
     
     
       5. A vehicle brake system according to claim 4, characterized in that the travel limiting element (82) at the actuation member (70, 80) is arranged between two collars (83, 84) and the carrier (86) is arranged between the travel limiting element (82) and one of the two collars (83, 84).   
     
     
       6. A vehicle brake system according to claim 4, characterized in that the carrier (86) comprises two claws (108a, 108b) which grip an actuation member (48) in an at least partially positive manner.   
     
     
       7. A vehicle brake system according to claim 4, characterized in that the carrier (86) extends parallel to the travel limiting element (82) between the two abutments (91, 92).   
     
     
       8. A vehicle brake system according to claim 4, characterized in that the carrier (86) comprises a carrier arm (114) on which the switching element (85) is arranged.   
     
     
       9. A vehicle brake system according to claim 8, characterized in that at least one of the claws (108a, 108b) and the carrier arm (114) are formed from an elastic material.   
     
     
       10. A vehicle brake system according to claim 8, the previous claim, characterized in that at least one of the claws (108a, 108b) and the carrier arm (114) are bent so that the travel limiting element (82) and the carrier (86) are accepted clearance free between two collars (83, 84).   
     
     
       11. A vehicle brake system according to claim 8, characterized in that the carrier arm (114) is in contact with the travel limiting element (82).   
     
     
       12. A vehicle brake system according to claim 4, characterized in that the switching element (85) protrudes between two legs (89a, 89b) of the travel limiting element (82) and is directed toward the abutment (91a).   
     
     
       13. A vehicle brake system according to claim 4, characterized in that the switching element (85) comprises a pivotable control lever (102), a free end (106) of which can contact the abutment (91a). 
     
     
       14. A vehicle brake system according to claim 13, characterized in that the abutment (91a) is formed by a housing (42) of the brake booster. 
     
     
       15. A vehicle brake system according to claim 13, characterized in that the control lever (102) can be brought into contact with one of the two abutments (91, 91a). 
     
     
       16. A vehicle brake system according to claim 4, characterized in that the switching element (85) is captively coupled with the travel limiting element (82) along the direction of the actuation movement of the actuation member (70, 80). 
     
     
       17. A vehicle brake system according to claim 4, characterized in that the switching element (85) is captively coupled with the travel limiting element (82) by at least one retaining member (200), with the retaining member (200) connecting the carrier (86) or the switching element (85) with the travel limiting element (82). 
     
     
       18. A vehicle brake system according to claim 17, characterized in that that the retaining member (200) comprises at least one bent clip (88) which grips the travel limiting element (82) in an at least partially positive manner. 
     
     
       19. A vehicle brake system according to claim 17, characterized in that the retaining member (200) comprises at least one clamp (893) which urges the carrier (86) or the switching element (85) against the travel limiting element (82). 
     
     
       20. A vehicle brake system according to claim 19, characterized in that the clamp (893) is designed as a spring clamp which resiliently clamps the carrier (86) or the switching element (85) against the travel limiting element (82). 
     
     
       21. A vehicle brake system according to claim 17, characterized in that at least one retaining member (200) is arranged in the area of the switching element (85). 
     
     
       22. A vehicle brake system according to claim 17, characterized in that the at least one retaining member (200) is arranged in the area of the end of the travel limiting element (82) remote from the actuation member (70, 80). 
     
     
       23. A vehicle brake system according to claim 22, characterized in that that the at least one retaining member (200) engages a recess in the travel limiting element (82).